ORA-12229：TNS
错误码
错误描述：TNS
错误原因：One or more Interchanges along the path to the destination desired has no more free connections available to be used for this call.
解决方法：Try again later when the Interchanges are less busy, or contact your network administrator to have him determine which interchange it is, and increase the number of connections available on that interchange.
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